| /* SPDX-License-Identifier: GPL-2.0-only */ | |
| #include <cpu/x86/msr.h> | |
| #include <timer.h> | |
| #include <timestamp.h> | |
| #define CU_PTSC_MSR 0xc0010280 | |
| #define PTSC_FREQ_MHZ 100 | |
| void timer_monotonic_get(struct mono_time *mt) | |
| { | |
| mono_time_set_usecs(mt, timestamp_get()); | |
| } | |
| uint64_t timestamp_get(void) | |
| { | |
| unsigned long long val; | |
| msr_t msr; | |
| msr = rdmsr(CU_PTSC_MSR); | |
| val = ((unsigned long long)msr.hi << 32) | msr.lo; | |
| return val / PTSC_FREQ_MHZ; | |
| } |